Taybarsiyya madrasah mihrab

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 3°.
• Contains two regular pentagons.
• Contains one regular four-pointed star polygon with vertex angle of 60°.
• Contains one regular 12-pointed star polygon with vertex angle of 72°.
• There are 12 non-regular reflective tiles (including 3 kites).
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 341 polygons.

1. Vol 2, page 23 (Taybars, Cairo, Egypt) of Hasan `Abd-al-Wahhab. Tarikh al-masajid al-athariyah, Cairo, 2 vols in Arabic, 1946. [wahhab] {The History of ancient Egyptian mosques}(1309AD, 708AH)

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